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Compressive Property of an Auxetic-Knitted Composite Tube Under Quasi-Static Loading

Boakye Andrews, Raji Rafui King, Ma Pibo, Cong Honglian

Autex Research Journal

2020

Vol. 20, no. 2

101--109

This research investigates the compressive property of a novel composite based on a weft-knitted auxetic tube subjected to a quasi-static compression test. In order to maximize the influence of the fiber content on the compression test, a Kevlar yarn was used in knitting the tubular samples using three different auxetic arrow-head structures (i.e. 4 × 4, 6 × 6 and 8 × 8 structure). A quasi-static compression test was conducted under two different impact loading speeds (i.e. 5 mm/min and 15 mm/min loading speed). The results indicate that the energy absorption (EA) property of the auxetic composite is highly influenced by the auxeticity of the knitted tubular fabric.